In theory whatever you have for current year should be provided for prior year. So, if you have 2019 Fast Path only, then essentially yes, that is true, you'd be PPR for everything in prior year using professional. Now, if you've purchased unlimited in Professional, that should provide unlimited in prior year. I will see if i can get your account specific information from a moderator here to review your account for accuracy. Thanks @Just-Lisa-Now- for tagging me.